HTML Code

<!DOCTYPE html>

<html lang="en">

<head>

  <meta charset="utf-8">

  <title>read fx.off state</title>

  <style>

    body { font-family: sans-serif; padding: 16px; max-width: 28rem; }

    button { padding: 8px 16px; margin-bottom: 12px; }

    pre { background: #f1f5f9; padding: 12px; border-radius: 6px; font-size: 14px; }

  </style>

</head>

<body>

  <button type="button" id="log-state">Toggle and log state</button>

  <pre id="state-output">Open DevTools console, then click the button.</pre>

  <script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>

  <script>

    console.log("Before:", jQuery.fx.off, typeof jQuery.fx.off);

    $("#log-state").on("click", function () {

      var before = jQuery.fx.off;

      jQuery.fx.off = !before;

      console.log("After toggle:", jQuery.fx.off);

      $("#state-output").text(

        "Before: " + before + " (" + typeof before + ")\nAfter: " + jQuery.fx.off

      );

    });

  </script>

</body>

</html>

Lines: 0 | Characters: 0

Live Preview Auto-refresh on Run

jQuery.fx.off — read Boolean state (Try It)